--- title: Motor Brush/Twin Springs Quote Request --- [![vs_logo](https://info.vulcanspring.com/hs-fs/hubfs/vs_logo.png?width=210&name=vs_logo.png)](http://www.vulcanspring.com/) - [Home](https://www.vulcanspring.com/) - [Contact Us](https://www.vulcanspring.com/contact/)   <div style="display:inline"><a href="http://www.providesupport.com?messenger=0h05ycvomtm771p3fegn0gftk6">Customer Support</a></div> ![](http://gldsta-02-or.com/images/track/33054.png?trk_user=33054&trk_tit=jsdisabled&trk_ref=jsdisabled&trk_loc=jsdisabled) # Motor Brush / Twin Spring Request If you are looking for a custom motor brush or twin spring for your application, this form can help get you started!  Fill out as much information as possible and our sales engineer will be in touch with you to design and quote the spring that works best for your project. Have questions? Call us, we'll answer the phone! 215-721-1721 ### Motor Brush/Twin Spring ![describe the image](https://info.vulcanspring.com/hs-fs/file-18446893-jpg/images/brushspring-twin.jpg?width=199&height=216&name=brushspring-twin.jpg) ### Guides & Reference **Selecting the Material**: Most of Vulcan's work is done in Type 301 stainless steel to produce the best part at the lowest cost. High-carbon steel, Inconel and other materials are suggested when they are required. **Estimate the Life:** This is important, since the life of the constant force spring is very predictable. A life cycle is an extension and retraction of either the whole spring or any portion of it. A low estimate of the life will lead to early failure. A high estimate (the more common error) makes the spring larger and more expensive than is necessary. **View our guides for reference ** ``` Guide B - 3,000 Cycles (Single Coil)Guide T - 3,000 Cycles (Twin Coil) ``` *Symbols used in Design Guide:* *t = material thickness (inches)* * b = material width (inches)* * ID = coil diameter (inches) +/- 10%* * P = force (pounds)* * Normal force tolerance +/- 10%* **Establishing the force:** The force of the spring should be equal to the requirement of the application. The normal tolerance for a constant force spring is +/-10% ### End Details  Vulcan has many standard dies. The diagrams shown are just a sampling of some of the more common end details. With Vulcan Spring’s fully-staffed, in-house tool & die department, special end designs may be obtained for a nominal charge. Please inquire about end details if the one you require is not shown. - ![](https://info.vulcanspring.com/hs-fs/file-18474939-gif/gallery/album/7605/edetail.gif) - [![](https://info.vulcanspring.com/hs-fs/file-18474939-medium-gif/gallery/album/7605/edetail.gif) ](https://info.vulcanspring.com/hs-fs/file-18474939-gif/gallery/album/7605/edetail.gif) 501 SCHOOLHOUSE ROAD, TELFORD, PA 18969 USA     TEL: 215-721-1721     FAX: 215-721-1739 [![flags2](https://info.vulcanspring.com/hs-fs/hub/171628/file-1543242757.png)](http://www.vulcanspring.com/sites/default/files/files/pro_sheet_chinese.pdf)[![flags-2](https://info.vulcanspring.com/hs-fs/hub/171628/file-1539657754.gif)](http://www.vulcanspring.com/sites/default/files/files/pro_sheet_french.pdf)[![flags11](https://info.vulcanspring.com/hs-fs/hub/171628/file-1539657759.gif)](http://www.vulcanspring.com/sites/default/files/files/pro_sheet_german.pdf)[![flags1](https://info.vulcanspring.com/hs-fs/hub/171628/file-1539657794.png)](http://www.vulcanspring.com/sites/default/files/files/pro_sheet_spanish.pdf) ![](https://www.facebook.com/tr?id=468300213525485&ev=PageView&noscript=1) ![](https://dc.ads.linkedin.com/collect/?pid=495569&fmt=gif) [Customer Support](http://www.providesupport.com?messenger=0h05ycvomtm771p3fegn0gftk6)